Performance of a lead glass spectrometer at high energies

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Abstract

The performance of a photon detector consisting of two lead glass arrays and three planes of proportional tubes is reported. The detector was designed to measure the energies and positions of photons in the energy range 3–50 GeV. An energy resolution of 1.0% + 5.0%√E (standard deviation) and a spatial resolution approaching 3 mm (standard deviation) were achieved during calibration with a low intensity positron beam. The energy resolution was degraded during use with a high intensity hadron beam whereas the spatial resolution was only slightly affected.

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    Present address: Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.

    ∗∗

    Present address: Department of Physics, University of Rochester, Rochester, New York 14627, USA.

    +

    Present address: AT&T Bell Laboratories, Holmdel, New Jersey 07733, USA.

    ++

    Present address: Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.

    §

    Present address: Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455, USA.

    §§

    Present address: Department of Physics, University of California, Santa Barbara, California 93106, USA.

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